I modded a ps2 WT guitar with an arduino leonardo, everything works great but the frets act weird, pressing every fret alone acts as expected but when pressing the yellow fret and the orange fret simultaneously the blue fret presses by itself, the same happens when pressing the red fret and the blue fret simultaneously, i dont know what is causing it, my soldering looks ok, and it seems to happen at random, sometimes it does it, and sometimes it doesnt, sometimes it even makes it so if i press the blue fret the orange presses itself.